Definition: Supplic means "to swear falsely," as in a false oath or lie, which involves making a statement that contradicts what you believe to be true. It's also possible to use supplics as a form of rhetorical device where someone uses something they already believe in order to justify their actions. The word is often used by politicians and those who support certain policies or positions in an effort to get votes or gain power, but it can also have negative connotations if used improperly.